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Security report for nationalcar.com

National Car Rental · Transportation · United States

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

70/100

Risk levelMedium

0–100, higher is better. How it is calculated

National Car Rental is a well-established enterprise in the transportation sector, providing car rental services globally with over 1,500 locations. The company offers a loyalty program called Emerald Club that enhances customer experience with benefits such as counter bypass and rewards. The website reflects a mature digital presence with a professional design, clear navigation, and comprehensive content tailored to business and leisure travelers. Technically, the site is built on Adobe Experience Manager, leveraging modern web technologies and analytics tools, ensuring fast performance and mobile optimization. Security posture is strong with HTTPS enforcement, security headers, and secure form handling, although a dedicated security policy page and incident response contacts are not found. Privacy compliance is robust with clear privacy and cookie policies and consent mechanisms. The main limitation is the absence of WHOIS data transparency, which slightly impacts business credibility but does not detract from the overall legitimacy and professionalism of the site.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

4 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

Need hands-on remediation? Email guard@offseq.com

Keep watching nationalcar.com

This scan found 21 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
65
Security headers
25
Email security
70
DNS health
85
Network security
100
GDPR outside view
73
Average
70

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company holds a strong market position as a global car rental provider with a focus on business and leisure travelers. Its business model centers on vehicle rentals supported by a loyalty program and digital tools like a mobile app. The presence of partner domains such as enterprise.com and emeraldclubpromos.com indicates a broad partnership ecosystem. The website content and structured data confirm the company’s long history since 1947 and its enterprise scale. The business benefits from clear contact channels and trust signals, supporting customer confidence and operational transparency.

Security posture

The website demonstrates a mature security posture with HTTPS, multiple security headers, and use of reCAPTCHA to protect forms. No exposed sensitive data or vulnerable libraries were detected. However, the lack of a public security policy or incident response contact information suggests room for improvement in transparency and readiness. There is no evidence of vulnerability disclosure programs or security.txt files. Overall, the security measures are adequate for the business type but could be enhanced to align with best practices and compliance frameworks.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and compliance.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure program or security.txt file.
  4. Regularly review and update third-party scripts and libraries to mitigate vulnerabilities.
  5. Enhance WHOIS transparency or provide domain registration details on the website to improve trust.

Contact details published on the site

Addresses
Legal name
National Car Rental
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
National Car Rental
Description
National Car Rental offers fast and convenient car rental services at over 1,500 locations worldwide. They provide exclusive benefits through their Emerald Club loyalty program including counter bypass, vehicle choice, and rewards towards free rental days.
Key services
Car rental reservations, Emerald Club loyalty program, Special offers and promotions, Mobile app for reservations and account management
Content quality
excellent
Branding
consistent

Technology

Stack
Adobe Experience Manager (AEM), Google Tag Manager, Google reCAPTCHA, Adobe Dynamic Tag Management, JavaScript ES6+, HTML5, CSS3
Frameworks
Adobe Experience Manager
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of reCAPTCHA for forms
  • No exposed sensitive data in HTML
  • Secure form inputs with validation

Analytics and tracking

Services
Google Analytics, Adobe mPulse
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Tag Manager, Adobe Dynamic Tag Management
Tracking pixels
Google Analytics (implied via GTM), Adobe mPulse
Marketing tools
Google reCAPTCHA, Adobe Experience Manager
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content and no blocking detected
  2. Strong use of Adobe Experience Manager CMS and modern web technologies
  3. Comprehensive privacy and cookie policies with consent mechanisms
  4. Clear business contact information and structured data for SEO
  5. No visible security vulnerabilities or exposed sensitive data
  6. WHOIS data missing, which reduces transparency but does not indicate fraud
  7. Multiple external trusted domains used for analytics and tag management
  8. Mobile optimized and accessible with good SEO practices
Technical notes

Notes

The website is built on Adobe Experience Manager, a robust enterprise CMS, and uses Google Tag Manager and Adobe Dynamic Tag Management for analytics and marketing. The site loads quickly, is mobile optimized, and includes accessibility features. Meta tags and structured data are well implemented for SEO. The use of modern JavaScript and CSS standards indicates a current technology stack. Hosting provider details are not explicitly found. The technical infrastructure supports a high-quality user experience with minimal technical debt visible from the front-end analysis.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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